Statistics of microcavity polaritons under non-resonant excitation

Details Statistics of microcavity polaritons under non-resonant excitation Statistics of microcavity polaritons under non-resonant excitation

2006-04-06

arxiv.org/abs/cond-mat/0604185v1

Physics

Condensed Matter

Other Condensed Matter

23 pages, 7 figures

Scientific paper

10.1103/PhysRevB.74.045324

A model describing amplification and quantum statistics of the exciton polaritons with k=0 in a non-resonantly excited semiconductor quantum well embedded in a microcavity is presented. Exploiting the bottleneck effect for exciton polaritons, it is assumed that the polaritons with k different from 0 act as a reservoir. The time evolution of the k=0 polaritons is described by a master equation, in which two- and one-polariton transitions between the mode with k=0 and the reservoir are accounted for. The k=0 mode exhibits a threshold depending on the material parameters and on the injected exciton density. Below threshold the quantum statistics of the emission is characteristic of an incoherent process, while above threshold it approaches that of a laser.

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